Polyurethane is a high polymer between rubber and plastic, with excellent wear resistance (5~10 times that of natural rubber and 3 times higher than that of styrene-butadiene rubber); excellent mechanical properties, high mechanical strength ( It is 2~3 times of natural rubber); its tensile strength, elongation at break, tear strength (elongation is about 6 times that of rubber, and other properties are more than 6 times that of ordinary rubber) and other mechanical properties are all It is much better than ordinary rubber materials; it has a wide hardness adaptation range, can maintain high elasticity in a wide hardness range (Shore A10~Shore D98), and still has high elasticity under high hardness (this is the Features that other rubber types do not have); high surface finish; excellent machining performance; adhesion to metal is much higher than that of ordinary rubber, which is more suitable for use at a certain line speed and high pressure; secondly, it has a wider modulus ( The material is in the stress-strain ratio range under stress, and its modulus is between ordinary rubber and plastic; excellent oil resistance (oil resistance is 3-5 times that of nitrile rubber), and chemical resistance is good . The oil resistance of polyurethane products is better than that of nitrile rubber; the aging resistance is better than that of natural rubber and other synthetic rubbers; it is resistant to hydrolysis, acid and alkali solutions.

Polyurethane rubber rollers have good chemical properties, are suitable for various types of inks and printing methods, and have special resistance to solvent components in various inks, fountain solutions, and cleaning agents. Polyurethane cots are also suitable for UV ink cots and varnish cots, etc., especially for diesel oil, gasoline, lubricating oil, kerosene, alcohol and salt water solution have good solvent resistance. Furthermore, polyurethane products have excellent radiation resistance and ozone resistance, and have good low temperature resistance. The temperature range of the product for long-term continuous work is generally 80-90 degrees, and the temperature for short-term use can reach 120 °C.